Window



FIG. 1 is a front perspective view of a window showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is the opposite side view of FIG. 4 thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Broken lines have been shown in the drawing for illustrative purposes only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a window, as shown and described. 